Q: What are the factor combinations of the number 41,231,431?

 A:
Positive:   1 x 4123143137 x 1114363139 x 2966295143 x 8017
Negative: -1 x -41231431-37 x -1114363-139 x -296629-5143 x -8017


How do I find the factor combinations of the number 41,231,431?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 41,231,431, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 41,231,431
-1 -41,231,431

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 41,231,431.

Example:
1 x 41,231,431 = 41,231,431
and
-1 x -41,231,431 = 41,231,431
Notice both answers equal 41,231,431

With that explanation out of the way, let's continue. Next, we take the number 41,231,431 and divide it by 2:

41,231,431 ÷ 2 = 20,615,715.5

If the quotient is a whole number, then 2 and 20,615,715.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 41,231,431
-1 -41,231,431

Now, we try dividing 41,231,431 by 3:

41,231,431 ÷ 3 = 13,743,810.3333

If the quotient is a whole number, then 3 and 13,743,810.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 41,231,431
-1 -41,231,431

Let's try dividing by 4:

41,231,431 ÷ 4 = 10,307,857.75

If the quotient is a whole number, then 4 and 10,307,857.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 41,231,431
-1 41,231,431
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

1371395,1438,017296,6291,114,36341,231,431
-1-37-139-5,143-8,017-296,629-1,114,363-41,231,431

More Examples

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